Hone



Feb., 279 1951 .1. .1. PALOTSEE HONE 3 Sheets-Sheefl l Filed DeC. 6,1946 Feb., 27, 1951 J. J. PALoTsEE HONE 3 Sheets-Sheet 2 Filed Dec. 6,1946 Feb. 27, 31951 1J, PALOTSEE 2,543,193

HONE

Filed Dec. 6, 1946 3 Sheets-Sheet 3 Patented Feb. 27, 1951 UNIED STATESPATENT OFFICE HONE John J. Palotsee, Youngstown, Ohio ApplicationDecember 6, 1946, Serial No. 714,459

`6 Claims. i

rThis invention is a novel adjustable hone, particularly adapted for usein hone rotating machines, preferably but not necessarily of the typeshown in my U. S. Letters Patent No. 2,358,247, dated September 12,1944, the present invention being an improvement upon the honesdisclosed in my U. S. Letters Patent No. 1,269,378, dated January 6,i942; No. 2,332,453, dated October 19, 1943; and No. 2,338,963, datedJanuary 1l, 1944; also the hone shown in my co-pendng application SerialNo. 585,629, led March 30, 1945, (now Patent No. 2,412,419, datedDecember 10, 1946).

rlhe principal object of the present invention is to provide anadjustable abrasive cylindrical hone, particularly adapted for grinding,machine finishing, polishing, cylindrical bearings or the like, the honeconsisting of a spindle carrying an annular series of radially disposedblades each carrying Carborundum or other abrasive hone sections orcarrying tubular flexible abrasive cylinders, the blades when fullycontracted around the spindle forming a substantially cylindricalsurface, the blades and spindle being provided with complementarytapered surfaces cooperating with means for shifting the assembly ofblades axially of the spindle to effect expansion or contraction of thehone with respect to the spindle.

Other minor objects of the invention will be hereinafter set forth.

I will explain the invention with reference to the accompanying drawingswhich illustrate several practical embodiments thereof, to enable othersfamiliar with the art to ado-pt and use the same; and will summarize inthe claims, the novel features of construction, and novel combinationsof parts, for which protection is desired.

In said drawings:

Figure l is a side elevation, partly in section, showing one form ofhone embodying my invention.

Fig. 2 is an enlarged transverse section on the line 2 2, Fig. 1.

Fig. 8 is a top plan View of the spindle, detached.

Fig. 4 is an enlarged transverse section on the line iw, Fig. 3.

Fig, 5 is a side elevation of one form of the blades, detached.

6 is an end view of the blade shown in Fig. 5.

Fig. l is a top plan :view of the preferred form of blade, detached.

Fig. 8 is a transverse section on the line 8 8, Fig. 7.

Fig. 9 is a plan view, partly in section, showing an abrasive flexiblecylinder adapted to be mounted upon the hone.

Fig. 10 is an end view of the cylinder shown in Fig. 9.

Fig. 11 is an elevation of a grooved modied blade for carrying a stonehone section cemented thereon.

Fig. 12 is a plan view of the stone section used with the blade shown inFig. 11.

Fig. 13 is a transverse section of the spindle, blades, and stones shownin Figs. 11 and l2.

Fig. 14 is a plan View of the blades of another modified hone adapted touse an abrasive coated sleeve.

Fig. 15 is a plan view of the abrasive coated sleeve used on the honeshown in Fig. 14.

Fig. 16 is a transverse section through the spindle blades and sleeveshown in Figs. 14 and 15.

The hone shown in Figs. 1-10 inclusive comprises a spindle I, shown moreparticularly in Figs. 3 and 4, said spindle being of small cylindricalshape, and being threaded as at Ia at one end, whereby the same may bemounted in a socket H of the flexible shaft H of a honing machine suchas shown in my U. S. Letters Patent No. 2,358,248 aforesaid; however,the spindle I may be mounted for rotation on any other desired machine.The opposite end of spindle I is threaded as at Ib. Intermediate thethreaded portions la, Ib is an annular series of spaced inclined groovesIc, three such series being shown in Fig. 4, evenly spaced apart aroundthe circumference of the spindle. The grooves Ic all slope in the samedirection and have the same angularly with respect to the axis ofspindle I, and the lower or deeper ends thereof are preferably roundedupwardly as at Id.

On spindle I adjacent the threaded portion Ia is a collar 2 having aconical recess 2a in its inner end, and having an annular recess 2b atits outer end. Threaded upon the portion la beyond the collar 2 is a nut3 having a non-circular outer end 3a to facilitate turning, the mainportion of the outer surface of the nut being knurled as at 3b to assistmanual turning of the nut. At the inner end of nut 3 is an annularflange 3c receiving the recessed end 2b of collar 2, and preferably theannular flange 3c is provided with calibrations 3d cooperating with azero mark on the collar 2 to assist the operator in determiningvariations in diameter of the hone.

Adjacent the opposite end of spindle I is a collar 4 similar to collar2, same having a conical recess lla in its inner end. A nut 5 isprovided 3 on the threaded portion Ib of spindle I and 1s locked inposition by set screw 6. Around spindle I between the nut 5 and thecollar 4 is a spring 'I, normally urging collar 4 towards the collar 2,for the purpose hereinafter described.

Around spindle I between the collars 2 and l is an annular series ofblades 8, three being shown in Fig. 2. As shown more particularly inFigs. 2, 5, 6 and 7, the blades 8 are arcuate in cross section, theinner surfaces conforming in curvature to that of the spindle I, asshown in Fig. 2. On the under side of each blade 8 at the center thereofare spaced aligned inclined ribs Sa having their inner lower edgesshaped to conform with the shape of the inclined grooves Ic in spindleI, the ribs 8a conforming in spacing and width to the grooves Ic, asshown in Fig. 1. The ends of blades 8 are oppositely beveled as at Sb toconform with the conical recesses 2a and ia of the collars 2 and 4, theconical recesses engaging the inclined ends 8b whereby the annularseries will be yieldably .positioned around the spindle by action of thespring l.

The outer side edges of each of the blades 3 may be recessed as at 8c,although the recesses may, if desired, be omitted. As shown in Fig. 7,the outer surface of each blade 8 preferably has a series of shallowholes 8d in which suction is set up to assist in retaining thecylindrical iiexible abrasive sleeve 9 on the assembly of blades whenplaced thereon, the abrasive sleeve 9 being of length conforming withthat of the blades 8. The holes 8a will serve, by suction, to maintainthe abrasive cylinder 9 on the blades to prevent slippage or shiftingduring the honing operation. By the above construction, when the nut 3is rotated relative to the spindle i, the Collar 2 will be shiftedtowards the collar Il, which will yield under pressure of spring 1 andthe series of blades 8 will be shifted axially of spindle I, causing theinclined ribs 8a to ride upwardly in their inclined slots Ic in thespindle whereby the diameter of the hone will be enlarged.

The abrasive coated sleeves `9 may be made of any suitable materialwhose surface is coated with abrasive. Ribs En: (Fig. 10) may beprovided in the bores of the sleeves 9 to engage the grooves 8c in theblades (Fig. 2) to prevent the sleeve from turning on the hone duringoperation thereof. sleeves S as a cutting tool makes it possible to usea relatively long spindle and blades since the blades 8 themselves maybe made thicker than those which carry stone hone sections, and thethicker blades are obviously more rigid throughout their length. The useof the sleeves 9 also provides for greater accuracy since wear thereonis relatively even and the diameter of the hone will remainsubstantially uniform. A worn sleeve 9 may be quickly and easilyreplaced by a new one, thus making my hone economical to use. Thesleeves S are readily available in various diameters for use on the samehone when adjusted to corresponding diameters, and thus the hone is notlimited to use with sleeves of only one diameter.

In Figs. 11, 12 and 13 a modification is shown in which the blades IQ asin the preceding figures have beveled ends and have the inclined ribs ontheir under sides. In this modification, however, the outer face of eachblade IB is provided with a shallow V-shaped spiral groove IIlathroughout its length, the pitch being relatively small as indicated inFig. 11, and the groove Illa preparing the surface of the blades I0 forthe The use of the flexible abrasive cement which secures anarcuate-shaped stone hone II thereto, the assembly of stones II when theblades IE! are fully contracted around the spindle I forming asubstantially cylindrical surface, as shown in Fig. 13.

In Figs. 14, 15 and 16 a further modication is shown in which the bladesI2 are generally similar to those in the preceding modifications withthe exception that their outer surfaces are provided with oppositelyextending shallow V- shaped grooves I2a and I2b respectively, as shownin Fig. 14, adapted to prevent turning oi the abrasive coated sleeve I3mounted around the blades I2, the grooves I2a and I2b replacing theholes 8d in the blade shown in Fig. '7 but serving the same purpose.

I do not limit my invention to the exact form shown in the drawings, forobviously changes may be made therein within the scope of the claims;and I do not herein claim the embodiment shown in Fig. i3 of the presentcase, as the same will form subject matter of a divisional application.

I claim:

l. An adjustable hone, comprising a spindle of uniform cross-sectionalsize and shape throughout its length and having an annular series ofspaced aligned grooves therein having their bottoms inclined in the samedirection and disposed at the same angle to the axis of the spindle; anannular series of blades around the spindle having their inner facesconforming with the shape of the spindle, each blade having a series ofaxially disposed aligned ribs on its inner face engaging the sides andbottoms of their related grooves, said ribs having their inner facesinclined in the same direction as and at the same angle as the bottomsof the grooves; said series of blades when in fully retracted positionforming a substantially cylindrical surface; means yieldably maintainingthe blades positioned around the spindle while permitting the blades tobe simultaneously shifted axially of the spindle to vary the diameter ofthe hone; and an abrasive member carried by the blades said abrasivemember comprising a flexible tubular sleeve of continuous peripherydisposed around the blades and having an abrasive coating.

2. In a hone as set forth in claim 1, said blades having shallow holesin their outer faces.

3. In a hone as set forth in claim 1, said blades having oppositelyextending spiral grooves of relatively steep pitch in their outer faces.

4. An adjustable hone comprising a cylindrical spindle of uniform sizeand having an annular' series of spaced aligned grooves therein havingtheir bottoms inclined in the same direction and disposed at the sameangle to the axis of the spindle; an annular series of blades around thespindle having their inner and outer faces conforming with the curvatureof the spindle, each blade having a series of axially disposed alignedribs on its under side engaging the sides and -bottoms of their relatedgrooves, said ribs having their inner faces inclined in the samedirection as and at the same angle as the bottoms of the grooves; meansyieldably maintaining the blades positioned around the spindle whilepermitting the blades to be simultaneously shifted axially of thespindle to vary the diameter of the hone; and an abrasive member carriedby the blades and comprising a flexible tubular sleeve of continuousperiphery disposed around the blades and having an abrasive coating.

5 5. In a hone as set forth in claim 4, said blades having shallow holesin their outer faces.

6. In a hone as set forth in claim 4, said Ablades having oppositelyextending spiral grooves of relatively steep pitch in their outer faces.

JOHN J. PALOTSEE.

REFERENCES CITED The following references are of record in the le ofthis patent:

UNITED STATES PATENTS Number Name Date Berck Apr. 22, 1930 Moser Nov.18, 1930 Levoy July 10, 1934 Disco Nov. 8, 1938 Palotsee Jan. 6, 1942Palotsee Oct. 19, 1943 Staples Dec. 7, 1943 Palotce Jan. 11, 1944Elliott Dec. 25, 1945

